Henley Triathlon 2026

How to take part

1. Pay your £70 registration fee 2. Create your fundraising page 3. Get training!

Event Details

Set in the picturesque town of Henley-on-Thames, this expertly organised event combines sport with stunning riverside scenery and a welcoming atmosphere for athletes of all abilities.

You’ll begin with a 200m indoor pool swim at Henley Leisure Centre, offering a safe and supportive environment for all abilities. From there, take on a scenic 18km cycle through the rolling Oxfordshire countryside, before finishing with a 2.5km run on a flat course that’s perfect for beginners and experienced athletes alike.

With its countryside bike route and accessible run course, the Henley Triathlon is designed to welcome everyone, whether you’re chasing a personal best or taking on your first triathlon in a stunning riverside setting.

The Henley Triathlon is also part of the UK Triathlon Cancer Research UK Wave, a wave dedicated to raising money for Cancer Research UK. The Cancer Research UK Wave encourages participants, of any age, gender or ability, to unite and take on a challenge that will help fund life-saving research into over 200 types of cancer.

Why participate for Cancer Research UK?

Meet Rika

My favourite moment was the Cancer Research UK cheer point, where my beautiful daughter and incredible husband were cheering me on!

- Rika

Rika joined Team Cancer Research UK in 2025, running in memory of her Mum.

"I relied on Cancer Research UK to learn more about breast cancer when my mum was diagnosed. Educating myself was a productive way to try and process everything. I eventually lost my mum to breast cancer in March 2020. It was a no brainer when it came to choosing a charity to raise money for. My mum was a gym bunny, so I thought she’d find it funny that I was going to be running in her memory. I enjoyed every single mile."

Team Cancer Research UK participants receive

Training tips and plans to help you prepare

Fundraising support to help you smash your target

An official finisher’s medal for completing your race

Training hub

Make your upcoming event a great success. Discover our training plans and watch stretching videos.

Nutrition guide

Our nutrition guide will help you to eat well whilst you train for your event.

Triathlon training

Our training plan is designed to help you achieve your goals.